Characterization of hydrogenated Al-doped ZnO films prepared by multi-step texturing for photovoltaic applications

Sung Ju Tark, Min Gu Kang, Sungeun Park, Seung Hun Lee, Chang Sik Son, Jeong Chul Lee, Donghwan Kim

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    In this study, we investigated the effect of the multi-step texturing process on the electrical and optical properties of hydrogenated Al-doped zinc oxide (HAZO) thin films deposited by RF magnetron sputtering. After their deposition, the surface of the HAZO films was multi-step textured in dilute HCl (0.5%) to investigate the change in their optical properties and surface morphology due to etching. The HAZO film fabricated under the type III condition showed excellent optical properties with a haze value of 50.81%. The microcrystalline silicon (μc-Si:H)-based p-i-n solar cells prepared using these new texture-etched HAZO substrates showed high quantum efficiencies in the long wavelength range, thereby demonstrating effective light trapping. Using the optimum AZO:H thin film textured surface, we achieved a p-i-n μc-Si solar cell efficiency of 7.08%.

    Original languageEnglish
    Pages (from-to)362-367
    Number of pages6
    JournalCurrent Applied Physics
    Volume11
    Issue number3
    DOIs
    Publication statusPublished - 2011 May

    Bibliographical note

    Funding Information:
    This work was supported by the New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning(KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 20093021010010) .

    Keywords

    • Hydrogenated
    • RF magnetron sputter
    • Surface textured
    • TCO
    • ZnO:Al

    ASJC Scopus subject areas

    • General Materials Science
    • General Physics and Astronomy

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